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arXiv · 1203.0158

Hybrid protoneutron stars with the Dyson-Schwinger quark model

H. Chen·M. Baldo·G. F. Burgio·H. -J. Schulze
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Abstract

We study the hadron-quark phase transition at finite temperature in the interior of protoneutron stars, combining the Dyson-Schwinger model for quark matter with the Brueckner-Hartree-Fock approach for hadronic matter. We discuss the dependence of the results on different nuclear three-body forces and on details of the quark model. %Compared to the bag model, the transition from the hadron phase %(without hyperons) to the quark phase appears at large density. A maximum mass exceeding two solar masses can be obtained with a strong three-body force and suitable parameter values in the Dyson-Schwinger model. With a hybrid configuration, the maximum mass of protoneutron stars is larger then that of cold neutron stars, such that a delayed collapse might be possible in principle.

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H. Chen, M. Baldo, G. F. Burgio, H. -J. Schulze. 2012-03-01. Hybrid protoneutron stars with the Dyson-Schwinger quark model. https://doi.org/10.1103/physrevd.86.045006

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